Mounting options for focus light

I've recently switched from using a Fantasea Nano as a focus light to a Sola 800. I love the Sola but I am having some issues mounting it in a way that allows me to easily adjust it under water. I currently use a cold shoe ball mount and attach the sola using a normal clamp (the sola has a ball mount as well).

The problem I find is that if I have the clamp lose enough to move the light around it becomes unstable underwater so I have to tighten it quite hard. When the light is attached this tight I have to let go of the camera, unscrew the clamp, re-position the light and re-tighten the clamp just to move the light from lets say macro to video mode. I've been searching the web and looking at forums for a different mount solution that will allow me to move the light around without having to open/close the clamp each time. Any recommendations?